JP2014000906A - Vehicular heat management system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To switch using a simple structure a case where an independent heating medium circuit is formed for each of plural routes and a case where the heating medium circuit is formed by joining the plural routes.SOLUTION: For plural channels included in a first group of channels 34C, 34D, 34E, 34F, 34G, and 34H, a first selector valve 31 and second selector valve 32 are actuated while being interlocked with each other so that a route to be allowed to communicate by the first selector valve 31 and a route to be allowed to communicate by the second selector valve 32 become identical to each other. Thus, a heating medium circuit including a first route 14 and a heating medium circuit including second routes 15A and 15B are formed independently of each other. For the plural channels included in the first group of channels, the first selector valve 31 and second selector valve 32 are actuated while being interlocked with each other so that the route to be allowed to communicate by the first selector valve 31 and the route to be allowed to communicate by the second selector valve 32 become different from each other. Thus, a heating medium circuit having the first route 14 and second routes 15A and 15B allowed to communicate with one another in series is formed.

Description

  The present invention relates to a heat management system used in a vehicle.

  Conventionally, Patent Document 1 describes a cooling device for a hybrid electric vehicle including an engine cooling system having a high target cooling water temperature, a motor cooling system having a medium target cooling water temperature, and a battery cooling system having a low target cooling water temperature. ing.

  In this prior art, a water pump is disposed in each of the engine cooling system, the motor cooling system, and the battery cooling system, the engine is disposed in the engine cooling system, and the electric motor and the heat storage device are disposed in the motor cooling system.

  Further, in this prior art, the engine cooling system and the motor cooling system are connected by a cooling water pipe and a three-way valve, and the engine cooling system and the motor cooling system can be disconnected or connected.

Japanese Patent Laid-Open No. 11-200858

  However, heat exchange devices mounted on vehicles include, for example, motor generators, inverters, batteries, EGR coolers, intake air coolers, etc., in addition to engines, electric motors, and heat storage devices, and these heat exchange devices are required. Management temperatures differ from each other.

  In the above prior art, when the temperature of the heat exchange target devices is appropriately controlled, the number of cooling systems increases according to the number of heat exchange target devices, and accordingly, the respective cooling systems are separated or connected. As the number of three-way valves increases, the overall configuration becomes very complicated.

  In view of the above, the present invention is for a vehicle that can switch between a case where an independent heat medium circuit is formed for each of a plurality of paths and a case where a plurality of paths are connected to form a heat medium circuit. The purpose is to simplify the configuration of the thermal management system.

In order to achieve the above object, in the invention described in claim 1,
A first pump (11) and a second pump (12) for sucking and discharging the heat medium;
A path constituted by a flow path (14) through which the heat medium flows, and a first path in which the first pump (11) is disposed;
A path constituted by flow paths (15A, 15B) through which the heat medium flows, and a second path in which the second pump (12) is disposed;
A first flow path group (34C, 34D, 34E, 34F, 34G, 34H) composed of a plurality of flow paths through which the heat medium flows;
The heat medium inlet side of the first path (14) and the heat medium inlet side of the second path (15A, 15B) are connected in parallel with each other, and the heat medium outlet side of each flow path of the first flow path group is connected in parallel with each other. A first switching valve (31) for switching between the case of communicating with the first path (14) and the case of communicating with the second path (15A, 15B) for each flow path of the first flow path group;
The heat medium outlet side of the first path (14) and the heat medium outlet side of the second path (15A, 15B) are connected in parallel to each other, and the heat medium inlet side of each flow path of the first flow path group is connected in parallel to each other. The second switching valve (32) for switching between the case of communicating with the first path (14) and the case of communicating with the second path (15A, 15B) for each flow path of the first flow path group,
The first switching is performed so that the path communicated by the first switching valve (31) and the path communicated by the second switching valve (32) are the same for a plurality of channels constituting the first channel group. When the valve (31) and the second switching valve (32) operate in conjunction with each other, a heat medium circuit including the first path (14) and a heat medium circuit including the second path (15A, 15B) Are formed independently of each other,
For the plurality of flow paths constituting the first flow path group, the first switching valve (the first switching valve (31) is different from the path communicated by the second switching valve (32). 31) and the second switching valve (32) operate in conjunction with each other to form a heat medium circuit in which the first path (14) and the second path (15A, 15B) are communicated in series. Features.

  Accordingly, a plurality of paths (14, 15) and a flow path group (34C, 34D, 34E, 34F, 34G, 34H) are connected to each other by a switching valve (31, 32). It is possible to switch between a case where an independent heat medium circuit is formed for each path (14, 15) and a case where a plurality of paths (14, 15) are connected to form a heat medium circuit (a diagram which will be described later). 7 to 10).

  In addition, the code | symbol in the bracket | parenthesis of each means described in this column and the claim shows the correspondence with the specific means as described in embodiment mentioned later.

It is a whole block diagram of the thermal management apparatus for vehicles in 1st Embodiment. It is sectional drawing of the battery module in 1st Embodiment. It is sectional drawing of the battery module in 1st Embodiment, and has shown the heat retention mode. It is sectional drawing of the battery module in 1st Embodiment, and has shown thermal storage mode and cold storage mode. It is sectional drawing of the battery module in 1st Embodiment, and has shown cold storage heat recovery mode. It is a block diagram which shows the electric control part in the thermal management system for vehicles of 1st Embodiment. It is a block diagram which shows the 1st state of the thermal management system for vehicles of FIG. It is a block diagram which shows the 2nd state of the thermal management system for vehicles of FIG. It is a block diagram which shows the 3rd state of the thermal management system for vehicles of FIG. It is a block diagram which shows the 4th state of the thermal management system for vehicles of FIG. It is a block diagram which shows the thermal management apparatus for vehicles in 2nd Embodiment. It is a block diagram which shows the thermal management apparatus for vehicles in 3rd Embodiment. It is a block diagram which shows the thermal management apparatus for vehicles in 4th Embodiment. It is a block diagram which shows the thermal management apparatus for vehicles in 5th Embodiment. It is a block diagram which shows the thermal management apparatus for vehicles in 6th Embodiment. It is a block diagram which shows the thermal management apparatus for vehicles in 7th Embodiment. It is a block diagram which shows the thermal management apparatus for vehicles in 8th Embodiment. It is a figure which shows the structural example of the thermal management apparatus for vehicles in 8th Embodiment. It is a block diagram which shows the thermal management apparatus for vehicles in 9th Embodiment. It is a block diagram which shows the thermal management apparatus for vehicles in 10th Embodiment. It is a block diagram which shows the thermal management apparatus for vehicles in 11th Embodiment. It is a block diagram which shows the thermal management apparatus for vehicles in 12th Embodiment. It is a block diagram which shows the thermal management apparatus for vehicles in 13th Embodiment. It is a block diagram which shows the thermal management apparatus for vehicles in 14th Embodiment. It is a block diagram which shows the pre thermal recovery mode of the thermal management apparatus for vehicles in 15th Embodiment. It is a block diagram which shows the thermal recovery mode of the thermal management apparatus for vehicles in 15th Embodiment. It is an operation | movement time chart of the thermal management apparatus for vehicles in 16th Embodiment. It is a block diagram which shows the heat retention mode of the thermal management apparatus for vehicles in 17th Embodiment. It is a block diagram which shows the heat retention mode of the thermal management apparatus for vehicles in 17th Embodiment. It is a block diagram which shows the heat retention mode of the thermal management apparatus for vehicles in 17th Embodiment. It is sectional drawing of the battery module in 18th Embodiment. It is a block diagram which shows the thermal management apparatus for vehicles in 19th Embodiment. It is a block diagram which shows the thermal management apparatus for vehicles in 20th Embodiment. It is a block diagram which shows the thermal management apparatus for vehicles in 21st Embodiment. It is a block diagram which shows the thermal management apparatus for vehicles in 22nd Embodiment. It is a block diagram which shows the thermal management apparatus for vehicles in 23rd Embodiment.

(First embodiment)
Hereinafter, the first embodiment will be described with reference to FIGS. A vehicle thermal management system 10 shown in FIG. 1 is used to adjust various devices (equipment that requires cooling or heating) and a vehicle interior included in a vehicle to an appropriate temperature.

  In the present embodiment, the thermal management system 10 is applied to a hybrid vehicle that obtains driving force for vehicle travel from an engine (internal combustion engine) and a travel electric motor.

  The hybrid vehicle of the present embodiment is configured as a plug-in hybrid vehicle that can charge power supplied from an external power source (commercial power source) when the vehicle is stopped to a battery (vehicle battery) mounted on the vehicle. As the battery, for example, a lithium ion battery can be used.

  The driving force output from the engine is used not only for driving the vehicle but also for operating the generator. And the electric power generated by the generator and the electric power supplied from the external power source can be stored in the battery, and the electric power stored in the battery is not only the electric motor for running but also the electric motor constituting the cooling system. Supplied to various in-vehicle devices such as type components.

  As shown in FIG. 1, the thermal management system 10 includes a first pump 11, a second pump 12, and a third pump 13. The first pump 11, the second pump 12, and the third pump 13 are electric pumps that suck and discharge the cooling water.

  The first pump 11 is disposed in the first pump flow path 14 (first path). The second pump 12 is disposed in one second pump flow path 15A out of the two second pump flow paths 15A and 15B (second path). The second pump 12 may be disposed in the other second pump flow path 15B. The third pump 13 is disposed in the third pump flow path 16 (third path).

  An intermediate / low temperature radiator 17 (second path radiator) is disposed in the second pump flow path 15B. The medium / low temperature radiator 17 is a radiator (outdoor heat exchanger) that radiates the heat of the cooling water to the outside air by exchanging heat between the cooling water and the outside air (hereinafter referred to as outside air).

  Connected to the second pump flow path 15B is a bypass flow path 18 through which cooling water flows by bypassing the intermediate / low temperature radiator 17. A three-way valve 19 is disposed at a connection portion of the bypass flow path 18 with respect to the second pump flow path 15A. The three-way valve 19 is cooling water flow switching means (second path switching means) for switching between the case where the cooling water flows through the intermediate / low temperature radiator 17 and the case where the cooling water flows through the bypass flow path 18.

  A sealed reserve tank 20 capable of storing cooling water is connected to the first pump channel 14 and the second pump channel 15A. By making the reserve tank 20 hermetically sealed, it is possible to obtain the effect of minimizing fluctuations in the liquid level in the reserve tank 20 even in an operating state where the heads of the first pump 11 and the second pump 12 are significantly different.

  An engine 21 and an engine radiator 22 (third path radiator) are disposed in the third pump flow path 16. A flow path through which cooling water flows is formed inside the engine 21. The engine 21 is cooled by cooling water flowing through the engine 21. The engine radiator 22 is a radiator (outdoor heat exchanger) that radiates the heat of the cooling water to the outside air by exchanging heat between the cooling water and the outside air (hereinafter referred to as outside air).

  The outdoor fan 23 blows outside air to the engine radiator 22 and the medium / low temperature radiator 17. Since the engine radiator 22 and the medium / low temperature radiator 17 are disposed in the foremost part of the vehicle, traveling wind can be applied to the engine radiator 22 and the medium / low temperature radiator 17 when the vehicle is traveling.

  Connected to the third pump flow path 16 is a bypass flow path 24 through which the coolant flows bypassing the engine radiator 22. A three-way valve 25 is disposed at a connection portion of the bypass flow path 24 with respect to the third pump flow path 16. The three-way valve 25 is cooling water flow switching means (third path switching means) for switching between the case where the cooling water flows through the engine radiator 22 and the case where the cooling water flows through the bypass passage 24.

  A sealed reserve tank 26 capable of storing cooling water is connected to the third pump flow path 16.

  A communication flow path 27 is connected between the upstream portion of the first pump flow path 14 relative to the first pump 11 and the downstream portion of the second pump flow path 15A relative to the second pump 12. Has been. An open / close valve 28 is connected to the communication channel 27. The on-off valve 28 opens and closes the communication channel 27.

  The upstream side of the first pump flow path 14 is connected to the first outlet 31 a of the first switching valve 31. The upstream side of the second pump flow path 15 </ b> B is connected to the second outlet 31 b of the first switching valve 31.

  The first switching valve 31 has a plurality of inlets into which cooling water flows. The first switching valve 31 has a valve body (not shown) that switches the flow of the cooling water so that the cooling water flowing in from each inlet flows out of either the first outlet 31a or the second outlet 31b. Yes.

  The downstream side of the first pump flow path 14 is connected to the first inlet 32 a of the second switching valve 32. The downstream side of the second pump flow path 15 </ b> A is connected to the second inlet 32 b of the second switching valve 32.

  The second switching valve 32 has a plurality of outlets through which cooling water flows out. The second switching valve 32 is a valve body that switches the flow of the cooling water so that the cooling water flowing out from each outlet becomes either the cooling water flowing in from the first inlet 32a or the cooling water flowing in from the second inlet 32b ( (Not shown).

  The valve body of the first switching valve 31 and the valve body of the second switching valve 32 are driven in conjunction by the valve body actuator mechanism 33.

  Between each outlet of the second switching valve 32 and each inlet of the first switching valve 31, the first flow path groups 34C, 34D, 34E, 34F, 34G, and 34H are connected.

  The first heat exchange target device groups 35, 36, 37, 38, 39, 40, 41, 42, 43 are arranged in the flow channels 34C, 34D, 34E, 34F, 34G in the first flow channel group. In the first flow path group, no heat exchange target device is arranged in the flow path 34H. Therefore, the flow path 34H constitutes a bypass flow path in which the cooling water flows bypassing the heat exchange target device.

  A charger 35, an inverter 36, and a traveling electric motor 37, which are heat exchange target devices, are arranged in series in the flow path 34C.

  The charger 35 is used when charging a battery with electric power (external electric power) supplied from an external power source. The inverter 36 is a power conversion device that converts DC power supplied from the battery into AC voltage and outputs the AC voltage to the traveling electric motor. The traveling electric motor 37 functions as a motor (motor) that converts electrical energy into mechanical energy called rotation of the output shaft, and as a generator (generator) that converts rotation (mechanical energy) of the output shaft into electrical energy. It has a function.

  An intake-air cooling heat exchanger 38 is disposed in the flow path 34D. The intake air cooling heat exchanger 38 cools the supercharged intake air by exchanging heat between the supercharged intake air that has been compressed by the supercharger and has reached a high temperature and the cooling water.

  A battery module 39 and a coolant coolant heat exchanger 40 are arranged in series in the flow path 34E. The battery module 39 is cooling water battery heat exchange means (heat medium battery heat exchange means) for exchanging heat between the cooling water (heat medium) and the battery. The cooling water refrigerant heat exchanger 40 is a heat medium refrigerant heat exchanger that exchanges heat between the cooling water (heat medium) and the refrigerant of the refrigeration cycle.

  A first air heating heat exchanger 41 and a cooling water heating heat exchanger 42 are arranged in series in the flow path 34F. The first air heating heat exchanger 41 heats the blown air by exchanging heat between the blown air into the passenger compartment and the cooling water. The cooling water heating heat exchanger 42 is a high-pressure side heat exchanger of the refrigeration cycle, and heats the cooling water by exchanging heat between the high-pressure refrigerant of the refrigeration cycle and the cooling water.

  A cooling water cooling heat exchanger 43 is disposed in the flow path 34G. The cooling water heating heat exchanger 42 is a low pressure side heat exchanger of the refrigeration cycle, and cools the cooling water by exchanging heat between the low pressure refrigerant of the refrigeration cycle and the cooling water.

  The refrigeration cycle 44 includes a compressor 45, a first expansion valve 46, and a second expansion valve 47 in addition to the cooling water refrigerant heat exchanger 40, the cooling water heating heat exchanger 42, and the cooling water cooling heat exchanger 43 described above. And a third expansion valve 48 and an evaporator 49.

  The refrigeration cycle 44 is a vapor compression refrigerator, and in this example, a chlorofluorocarbon refrigerant is used as the refrigerant. Therefore, the refrigeration cycle 44 constitutes a subcritical refrigeration cycle in which the high-pressure side refrigerant pressure does not exceed the critical pressure of the refrigerant.

  The compressor 45 is an electric compressor that is driven by electric power supplied from a battery, and sucks, compresses and discharges a gas-phase refrigerant. The compressor 45 may be rotationally driven by the engine via a pulley, a belt, or the like.

  The high-temperature and high-pressure gas-phase refrigerant discharged from the compressor 45 is absorbed and condensed by exchanging heat with cooling water in the cooling water heating heat exchanger 42 which is a high-pressure side heat exchanger.

  The first expansion valve 46 is a decompression unit that decompresses and expands the liquid-phase refrigerant condensed in the cooling water heating heat exchanger 42, and includes a variable throttle that can change the throttle opening. The refrigerant that has passed through the first expansion valve 46 absorbs heat from the cooling water by exchanging heat with the cooling water in the cooling water refrigerant heat exchanger 40.

  The second expansion valve 47 and the third expansion valve 48 are decompression means for decompressing and expanding the refrigerant absorbed by the cooling water cooling heat exchanger 43. The low pressure refrigerant decompressed and expanded by the second expansion valve 47 is evaporated by absorbing heat from the cooling water by exchanging heat with the cooling water in the cooling water cooling heat exchanger 43 which is a low pressure side heat exchanger. The gas-phase refrigerant evaporated in the cooling water cooling heat exchanger 43 is sucked into the compressor 45 and compressed.

  The evaporator 49 is an air-cooling heat exchanger that cools the blown air by exchanging heat between the low-pressure refrigerant decompressed and expanded by the third expansion valve 48 and the blown air into the vehicle interior. The vapor phase refrigerant that has absorbed heat from the cooling water in the evaporator 49 and is evaporated is sucked into the compressor 45 and compressed.

  In the cooling water cooling heat exchanger 43, the cooling water is cooled by the low-pressure refrigerant of the refrigeration cycle 44, whereas in the above-described medium / low temperature radiator 17 and the engine radiator 22, the cooling water is cooled by outside air. For this reason, the temperature of the cooling water cooled by the cooling water cooling heat exchanger 43 is lower than the temperature of the cooling water cooled by the medium / low temperature radiator 17 and the temperature of the cooling water cooled by the engine radiator 22. .

  The evaporator 49 is disposed inside the casing 50 of the indoor air conditioning unit. The casing 50 forms an air passage through which blown air blown by the indoor blower 51 flows. The first air heating heat exchanger 41 is disposed on the downstream side of the air flow of the evaporator 49 inside the casing 50.

  An air mix door 52 is disposed between the evaporator 49 and the first air heating heat exchanger 41 inside the casing 50 of the indoor air conditioning unit. The air mix door 52 is an air volume ratio adjusting unit that adjusts the air volume ratio between the blown air passing through the first air heating heat exchanger 41 and the blown air flowing bypassing the first air heating heat exchanger 41. .

  The downstream side of the second pump flow path 15 </ b> B is connected to the first inlet 53 a of the third switching valve 53. The downstream side of the third pump flow path 16 is connected to the second inlet 53 b of the third switching valve 53.

  The third switching valve 53 has a plurality of outlets through which cooling water flows out. The third switching valve 53 is a valve body that switches the flow of the cooling water so that the cooling water flowing out from each outlet becomes either the cooling water flowing in from the first inlet 53a or the cooling water flowing in from the second inlet 53b ( (Not shown).

  The upstream side of the second pump flow path 15 </ b> A is connected to the first outlet 54 a of the fourth switching valve 54. The upstream side of the third pump flow path 16 is connected to the second outlet 54 b of the fourth switching valve 54.

  The fourth switching valve 54 has a plurality of inlets through which cooling water flows. The fourth switching valve 54 has a valve body (not shown) that switches the flow of the cooling water so that the cooling water flowing in from each inlet flows out of either the first outlet 54a or the second outlet 54b. Yes.

  The valve body of the third switching valve 53 and the valve body of the fourth switching valve 54 are driven in conjunction by a valve body actuator mechanism 55.

  Between the respective inlets of the third switching valve 53 and the respective outlets of the fourth switching valve 54, second flow path groups 56C, 56D, 56E, 56F, 56G, 56H, and 56I are connected.

  The second heat exchange target device groups 57, 58, 59, 60, 61, 62 are arranged in the flow channels 56C, 56D, 56E, 56F, 56G, 56H in the second flow channel group, and the second flow No heat exchange target device is arranged in the flow path 56I in the path group. Therefore, the flow path 56I constitutes a bypass flow path in which the cooling water flows bypassing the heat exchange target device.

  A second air heating heat exchanger 57 is disposed in the flow path 56C. The second air heating heat exchanger 57 heats the blown air by exchanging heat between the blown air to the passenger compartment and the cooling water. The second air heating heat exchanger 57 is disposed on the air flow downstream side of the first air heating heat exchanger 41 inside the casing 50 of the indoor air conditioning unit.

  A throttle 58 for adjusting the intake air flow rate of the engine 21 is disposed in the flow path 56D. The throttle 58 is cooled by cooling water flowing through the flow path 56D.

  A supercharger 59 that supercharges the intake air of the engine 21 using the residual energy of the exhaust gas of the engine 21 is disposed in the flow path 56E. The supercharger 59 is cooled by the cooling water flowing through the flow path 56E.

  An exhaust cooling heat exchanger 60 that cools the exhaust gas by exchanging heat between the exhaust gas returned to the intake side of the engine 21 and the cooling water is disposed in the flow path 56F.

  A cooling water oil heat exchanger 61 that cools or heats oil by exchanging heat between oil such as engine oil (lubricating oil used for the engine 21) or ATF oil and cooling water is disposed in the flow path 56G. Yes.

  In the flow path 56H, a heat storage device 62 that stores the hot or cold heat of the cooling water is disposed.

  Next, details of the battery module 39 will be described with reference to FIGS. The battery module 39 has a casing 392 that houses the battery 391. The battery 391 is preferably maintained at a temperature of about 10 to 40 ° C. for reasons such as a decrease in output, a decrease in charging efficiency and prevention of deterioration.

  The casing 392 forms an air passage through which the blown air blown from the blower 393 flows. The casing 392 is formed with an inside air introduction port 392a for introducing vehicle interior air (hereinafter referred to as inside air).

  The battery 391 is disposed on one end side inside the casing 392. The inside air inlet 392a is formed on the other end side inside the casing 392. One end side portion of the casing 392 where the battery 391 is disposed is formed of a heat insulating material. Thereby, the battery module 39 has a heat retaining structure that stores warm / cold heat in the battery 391.

  The blower 393 is disposed in the vicinity of the inside air introduction port 392a. When the blower 393 is activated, the inside air is introduced from the inside air introduction port 392a and is blown to the air passage inside the casing 392.

  Inside the casing 392, a partition plate 392d that partitions the space from the inside air inlet 392a to the battery 391 into two air passages 392b and 392c is formed.

  An air passage (not shown) through which air flows is formed inside the battery 391. The battery 391 is cooled or heated by exchanging heat with the air flowing through the battery 391. The air passage inside the battery 391 communicates with the two air passages 392b and 392c inside the casing 392.

  The casing 392 is formed with two air discharge ports 392e and 392f for discharging the air flowing through the air passages 392b and 392c. One air discharge port 392e communicates with one air passage 392b. The other air discharge port 392f communicates with the other air passage 392c.

  A battery heat exchanger 394 is disposed in the other air passage 392c. The battery heat exchanger 394 exchanges heat between the blown air and the cooling water.

  A drain 392g for discharging condensed water generated when the blown air passes through the battery heat exchanger 394 is formed in a portion of the casing 392 in the vicinity of the battery heat exchanger 394.

  Inside the casing 392, three air path switching doors 395, 396, 397 are arranged. The three air path switching doors 395, 396, and 397 constitute air flow switching means for switching the air flow in the air passages 392b and 392c.

  The first air path switching door 395 switches between the inside air introduction port 392a and the air passages 392b and 392c. The second air path switching door 396 opens and closes one air outlet 392e. The third air path switching door 397 opens and closes the other air discharge port 392f.

  By rotating the three air path switching doors 395, 396, and 397, the battery module 39 is switched to four modes including a heat retention mode, a heat storage mode, a cold storage mode, and a cold storage heat recovery mode.

  In the heat retaining mode, the three air path switching doors 395, 396, and 397 are rotated to the positions shown in FIG. 3 to close all the inside air introduction ports 392a and the air discharge ports 392e and 392f.

  As a result, the flow of both the inside air and the outside air is blocked in the air passage inside the casing 392. For this reason, the battery 391 stores the heat generated by itself. In the heat retention mode, it is preferable to interrupt the flow of cooling water to the battery heat exchanger 394 in order to efficiently store heat in the battery 391.

  The heat storage mode is implemented mainly when the outside air temperature is low in winter (at the time of low outside air temperature). In the heat storage mode, as shown in FIG. 4, the first air path switching door 395 communicates the inside air introduction port 392a and the air passage 392c, and the second air path switching door 396 opens one air discharge port 392e. The third air path switching door 397 closes the other air discharge port 392f.

  As a result, the inside air introduced from the inside air introduction port 392a flows through the air passage 392c and the battery heat exchanger 394 and the battery 391 in this order, and then flows through the air passage 392b and from one air discharge port 392d. Discharged.

  At this time, the cooling water heated by the cooling water heating heat exchanger 42 or the like is circulated through the battery heat exchanger 394. Thereby, since the inside air heated by the battery heat exchanger 394 flows through the battery 391, the battery 391 stores warm heat.

  The cold storage mode is performed mainly when the outdoor temperature is high in summer (at a high outdoor temperature). In the cold storage mode, the three air path switching doors 395, 396, and 397 are rotated similarly to the heat storage mode shown in FIG.

  As a result, the inside air introduced from the inside air introduction port 392a flows through the air passage 392c and the battery heat exchanger 394 and the battery 391 in this order, and then flows through the air passage 392b and from one air discharge port 392d. Discharged.

  At this time, the cooling water cooled by the cooling water cooling heat exchanger 43 is allowed to flow through the battery heat exchanger 394. Thereby, since the inside air cooled by the battery heat exchanger 394 flows through the battery 391, cold energy is stored in the battery 391.

  The cold storage heat recovery mode is performed after the heat storage mode or the cold storage mode is performed, that is, when warm or cold energy is stored in the battery 391. In the cold storage heat recovery mode, as shown in FIG. 5, the first air path switching door 395 communicates the inside air inlet 392a and the air passage 392b, and the second air path switching door 396 is one air discharge port 392e. And the third air path switching door 397 opens the other air discharge port 392f.

  As a result, the inside air introduced from the inside air introduction port 392a flows through the air passage 392b and the battery 391 and the battery heat exchanger 394 in this order, and then flows through the air passage 392b and from the other air discharge port 392e. Discharged.

  At this time, when the heat is stored in the battery 391, the cooling water cooled by the cooling water cooling heat exchanger 43 is circulated through the battery heat exchanger 394. Thereby, since the inside air heated by the battery 391 flows through the battery heat exchanger 394, the heat stored in the battery 391 can be recovered in the cooling water.

  On the other hand, when cold energy is stored in the battery 391, the cooling water heated by the cooling water heating heat exchanger 42 or the like is circulated through the battery heat exchanger 394. Thereby, since the inside air cooled by the battery 391 flows through the battery heat exchanger 394, the cold energy stored in the battery 391 can be recovered in the cooling water.

  By switching the battery module 45 to the heat storage mode, the cold storage mode, or the cold storage heat recovery mode, the flow pattern of the passenger compartment air is changed to the first air guide path pattern (first air flow state) and the second air guide path pattern (first 2 air flow state).

  In the case of the first air guide path pattern, the vehicle interior air flows in the order of the battery heat exchanger 394, the battery 391, and the air discharge port 392e. The first air guide path pattern is realized by switching the battery module 45 to the heat storage mode or the cold storage mode.

  In the case of the second air guide path pattern, the passenger compartment air flows in the order of the battery 391, the battery heat exchanger 394, and the air discharge port 392f. The second air guide pattern is realized by switching the battery module 45 to the cold storage heat recovery mode.

  Next, the electric control part of the thermal management system 10 will be described with reference to FIG. The control device 70 is composed of a well-known microcomputer including a CPU, ROM, RAM, etc. and its peripheral circuits, and performs various calculations and processing based on an air conditioning control program stored in the ROM, and is connected to the output side. The first pump 11, the second pump 12, the third pump 13, the three-way valves 19, 25, the compressor 45, the indoor blower 51, the valve body actuator mechanism 33 for the first and second switching valves 31, 33, the third , A control means for controlling the operation of the valve body actuator mechanism 55 and the like for the fourth switching valves 53 and 54.

  The control device 70 is configured integrally with control means for controlling various control target devices connected to the output side thereof, but has a configuration (hardware and software) for controlling the operation of each control target device. The control means for controlling the operation of each control target device is configured.

  In the present embodiment, in particular, a configuration (hardware) for controlling the operation of the valve body actuator mechanism 33 for the first and second switching valves 31 and 33 and the valve body actuator mechanism 55 for the third and fourth switching valves 53 and 54. Software and software) is the switching valve control means 70a. Of course, the switching valve control means 70a may be configured separately from the control device 70.

  On the input side of the control device 70, detection of various sensors such as an inside air sensor 71, an outside air sensor 72, a first water temperature sensor 73, a second water temperature sensor 74, a third water temperature sensor 75, a battery temperature sensor 76, an inverter temperature sensor 76, and the like. A signal is input.

  The inside air sensor 71 is detection means (inside air temperature detection means) for detecting the inside air temperature (in-vehicle temperature). The outside air sensor 72 is detection means (outside air temperature detection means) for detecting outside air temperature.

  The first water temperature sensor 73 is temperature detecting means for detecting the temperature of the cooling water flowing through the first pump flow path 14. The second water temperature sensor 74 is a temperature detection means for detecting the temperature of the cooling water flowing through the second pump flow paths 15A and 15B. The third water temperature sensor 75 is a temperature detecting means for detecting the temperature of the cooling water flowing through the third pump flow path 16.

  The battery temperature sensor 76 is a battery temperature detection unit that detects the temperature of the cooling water that has flowed out of the battery module 39. The inverter temperature sensor 77 is battery temperature detection means for detecting the temperature of the inverter that has flowed out of the inverter 36.

  On the input side of the control device 70, operation signals from various air conditioning operation switches provided on the operation panel 79 disposed near the instrument panel in the front part of the vehicle interior are input. As various air conditioning operation switches provided on the operation panel 79, an air conditioner switch, an auto switch, an air volume setting switch for the indoor fan 51, a vehicle interior temperature setting switch, and the like are provided.

  The air conditioner switch is a switch for switching on / off (on / off) of air conditioning (cooling or heating). The auto switch is a switch for setting or canceling automatic control of air conditioning. The vehicle interior temperature setting switch is target temperature setting means for setting the vehicle interior target temperature by the operation of the passenger.

  Next, the operation in the above configuration will be described. In the thermal management system 10, the control device 70 controls the operation of the first to fourth switching valves 31, 32, 53, 54 (specifically, the valve body actuator mechanisms 33, 55), whereby the first shown in FIG. 1 state, the second state shown in FIG. 8, the third state shown in FIG. 9, and the fourth state shown in FIG. In order to facilitate understanding, FIGS. 7 to 10 show a simplified configuration of the vehicle thermal management system 10 of FIG.

  In the first state shown in FIG. 7, for each flow path of the first flow path group connected between the first switching valve 31 and the second switching valve 32, the flow path communicated by the first switching valve 31 The first and second switching valves 31 and 32 are controlled so that the flow path communicated by the second switching valve 32 is the same.

  Further, for each flow path of the second flow path group connected between the third switching valve 53 and the fourth switching valve 54, the flow path communicated by the third switching valve 53 and the fourth switching valve 54 communicate with each other. The third and fourth switching valves 53 and 54 are controlled so that the flow paths to be made are the same.

  As a result, a first cooling circuit indicated by a thick solid line, a second cooling circuit indicated by a thick one-dot chain line, and a third cooling circuit indicated by a thick two-dot chain line are formed.

  In the second state shown in FIG. 8, for each flow path of the first flow path group connected between the first switching valve 31 and the second switching valve 32, the flow path communicated by the first switching valve 31 The first and second switching valves 31 and 32 are controlled so that the flow path communicated by the second switching valve 32 is the same.

  About each flow path of the 2nd flow path group connected between the 3rd switching valve 53 and the 4th switching valve 54, it connects with the flow path connected by the 3rd switching valve 53, and the 4th switching valve 54. The third and fourth switching valves 53 and 54 are controlled so that the flow paths differ.

  Thereby, the 1st cooling circuit shown as a thick solid line, and the 2nd 3rd connection cooling circuit shown as a thick dashed-dotted line are formed.

  In the third state shown in FIG. 9, for each flow path of the first flow path group connected between the first switching valve 31 and the second switching valve 32, the flow path communicated by the first switching valve 31 The first and second switching valves 31 and 32 are controlled so that the flow path communicated by the second switching valve 32 is different.

  About each flow path of the 2nd flow path group connected between the 3rd switching valve 53 and the 4th switching valve 54, it connects with the flow path connected by the 3rd switching valve 53, and the 4th switching valve 54. The third and fourth switching valves 53 and 54 are controlled so that the flow paths are the same.

  Thereby, the 1st 2nd connection cooling circuit shown as a thick solid line, and the 3rd connection cooling circuit shown as a thick two-dot chain line are formed.

  In the fourth state shown in FIG. 10, for each flow path of the first flow path group connected between the first switching valve 31 and the second switching valve 32, the flow path communicated by the first switching valve 31 The first and second switching valves 31 and 32 are controlled so that the flow path communicated by the second switching valve 32 is different.

  About each flow path of the 2nd flow path group connected between the 3rd switching valve 53 and the 4th switching valve 54, it connects with the flow path connected by the 3rd switching valve 53, and the 4th switching valve 54. The third and fourth switching valves 53 and 54 are controlled so that the flow paths differ.

  Thereby, the 1st 2nd 3rd connection cooling circuit shown as a thick solid line is formed.

  Next, specific examples of operation according to the first to fourth states shown in FIGS. 7 to 10 will be described. For example, the first state is switched when the cooling water temperature in the third pump flow path 16 exceeds 60 ° C. As a result, it is possible to avoid the cooling water that has become high temperature due to the waste heat of the engine 21 from flowing into the first pump flow path 14 and the second pump flow paths 15A and 15B from the third pump flow path 16. A device having a low allowable temperature can be protected from heat damage of the engine 21.

  For example, the switching from the first state to the second state is performed when the cooling water temperature in the third pump flow path 16 is less than 60 ° C. and the cooling water heating heat exchanger 42 is connected to the second cooling circuit. In the state in which the three-way valve 19 is controlled so that the cooling water flows through the mid-low temperature radiator 17, the cooling water temperature in the second pump flow path 15A is higher than the cooling water temperature in the third pump flow path 16. Done in case.

  Thereby, the cooling water temperature in 15 A of flow paths for 2nd pumps can be lowered | hung using the two radiators, the low temperature radiator 17 and the engine radiator 22. FIG.

  For example, in the second state, when the cooling water cooling heat exchanger 43 is connected to the second cooling circuit and the engine 21 is stopped, the engine is warmed up (performed before the engine 21 is started). When a command to execute (engine warm-up) is issued, the cooling water heating heat exchanger 42 is connected to the second cooling circuit.

  Thereby, since the cooling water heated with the cooling water heating heat exchanger 42 flows through the engine 21, the engine pre-warm-up can be performed.

  In a state where the cooling water heating heat exchanger 42 is connected to the second cooling circuit and the three-way valve 19 is controlled so that the cooling water flows to the medium / low temperature radiator 17, the second pump flow path When the cooling water temperature in 15A or the cooling water temperature in the third pump flow path 16 reaches 60 ° C. or more, the second state is switched to the first state.

  As a result, it is possible to avoid the cooling water that has become high temperature due to the waste heat of the engine 21 from flowing into the first pump flow path 14 and the second pump flow paths 15A and 15B from the third pump flow path 16. A device having a low allowable temperature can be protected from heat damage of the engine 21.

  For example, in the third state, it is estimated that a failure (abnormality) has occurred in one of the first pump 11 and the second pump 12, and the cooling water temperature in the third pump flow path 16 is 40 ° C. or higher. Can be switched to.

  Thereby, it is possible to circulate the cooling water as much as possible by the pump that has not failed among the first pump 11 and the second pump 12. In the third state, when the failed pump returns, the first state is switched.

  As a technique for estimating a pump failure (abnormality), a failure detection means installed in the pump itself is provided to notify the controller 70 of the occurrence of the pump failure (for example, the pump in response to a drive command from the controller 70). If the rotational speed of the engine deviates from the predetermined range (normal range) or the operating current value deviates from the predetermined range in response to the drive command from the control apparatus 70, the control apparatus 70 fails. , And a means for transmitting the rotation speed signal of the pump to the control device 70, and the rotation of the pump in response to a drive command issued from the control device 70 to the pump. There is a method of estimating a pump failure (abnormality) by the internal logic of the control device 70 when the number deviates from a predetermined range (normal range).

  For example, in the fourth state, the cooling water temperature in the first pump flow path 14, the cooling water temperature in the second pump flow path 15A, and the cooling water temperature in the third pump flow path 16 are all less than −10 ° C. It is switched when it is.

  For example, in the fourth state, any one of the cooling water temperature in the first pump flow path 14, the cooling water temperature in the second pump flow path 15A, and the cooling water temperature in the third pump flow path 16 is −10 ° C. or higher. When it becomes, it switches to the 2nd state.

  For example, the fourth state is switched when it is estimated that one of the first pump 11 and the second pump 12 has failed and the coolant temperature in the third pump flow path 16 is lower than 40 ° C.

  As a result, the cooling water can be circulated as much as possible by the third pump 13 and the non-failed pump of the first pump 11 and the second pump 12. When the engine 21 is started, the fourth state is switched to the third state. As a result, it is possible to avoid the cooling water that has become high temperature due to the waste heat of the engine 21 from flowing into the first pump flow path 14 and the second pump flow paths 15A and 15B from the third pump flow path 16. A device having a low allowable temperature can be protected from heat damage of the engine 21.

(Second Embodiment)
In the second embodiment, an operation mode when one of the first pump 11 and the second pump 12 fails will be described.

  It is presumed that one of the first pump 11 and the second pump 12 has failed, the engine 21 is not operating, and the coolant temperature in the third pump passage 16 is the first pump passage. When the cooling water temperature at 14 and the cooling water temperature at the second pump flow path 15A are lower than the higher one, the first, second and third coupled cooling circuits (thick solid lines) are formed as shown in FIG. The In order to facilitate understanding, FIG. 11 shows a simplified configuration of the vehicle thermal management system 10.

  Thereby, the non-failed pump of the first pump 11 and the second pump 12 and the third pump 13 can be operated to continue cooling the heat exchange target device as much as possible.

  In the first heat exchange target device group 81, a device (battery module 39 in the example of FIG. 11) whose allowable temperature is equal to or lower than a predetermined temperature (assuming about 40 ° C.) alone is used as the first, second, and third connected cooling circuits. The other devices are connected in parallel to the first, second, and third connected cooling circuits.

  Thereby, it is possible to prevent heat damage as much as possible by increasing the flow rate of the cooling water as much as possible for a device having a low allowable temperature (battery module 39 in the example of FIG. 11).

(Third embodiment)
In the third embodiment, an operation mode when one of the second pump 12 and the third pump 13 fails will be described.

  When it is estimated that one of the second pump 12 and the third pump 13 has failed, as shown in FIG. 12, the first cooling circuit (thick solid line) and the second third connected cooling circuit (thick dashed line) Is formed. In order to facilitate understanding, FIG. 12 shows a simplified configuration of the vehicle thermal management system 10.

  In the first heat exchange target device group 81, the first cooling of the device (battery module 39 in the example of FIG. 12) whose allowable temperature is equal to or lower than a predetermined temperature (assuming about 40 ° C.) together with the cooling water cooling heat exchanger 43 is performed. A device having a medium allowable temperature (about 60 ° C.) (cooling water heating heat exchanger 42 in the example of FIG. 12) is connected to the second and third connected cooling circuits.

  Thereby, the pump which is not out of order among the 2nd pump 12 and the 3rd pump 13 can be operated, and cooling of the heat exchange object apparatus can be continued as much as possible.

(Fourth embodiment)
In the fourth embodiment, an operation mode in which oil is warmed up by warm heat stored in the heat storage device will be described.

  When the temperature of the cooling water in the heat storage device (battery module 39 in the example of FIG. 13) is equal to or higher than the oil temperature in the cooling water oil heat exchanger 61 and equal to or higher than a predetermined temperature, the first cooling is performed as shown in FIG. A circuit (left broken line), a second cooling circuit (thick solid line), and a third cooling circuit (right broken line) are formed, and the three-way valve 19 is set so that cooling water flows through the bypass passage 18 in the second cooling circuit. Control. In order to facilitate understanding, FIG. 13 shows a simplified configuration of the vehicle thermal management system 10.

  In the first heat exchange target device group 81, a heat storage device (battery module 39 in the example of FIG. 13) is connected to the second cooling circuit, and in the second heat exchange target device group 82, cooling water oil heat exchange is performed. The vessel 61 is connected to the second cooling circuit.

  Thereby, since the cooling water heated with the heat storage apparatus (battery module 39 in the example of FIG. 13) flows through the cooling water oil heat exchanger 61, the engine oil and the ATF oil can be warmed.

  Since the cooling water flows through the bypass flow path 18 in the second cooling circuit, the heat of the cooling water in the second cooling circuit can be prevented from being radiated to the outside air by the medium / low temperature radiator 17. For this reason, the warm heat stored in the heat storage device (battery module 39 in the example of FIG. 13) can be efficiently used for oil warm-up.

  In addition, when the temperature of the cooling water of the heat storage device (battery module 39 in the example of FIG. 13) falls within a predetermined temperature difference with respect to the temperature of the engine oil, control for terminating this operation mode is performed.

  In the example of FIG. 13, the heat storage device (battery module 39 in the example of FIG. 13) is included in the first heat exchange target device group 81, but the heat storage device is included in the second heat exchange target device group 82. It may be.

  As shown in FIG. 13, when the heat storage device (battery module 39 in the example of FIG. 13) and the cooling water oil heat exchanger 61 communicate with each other, the battery 391 has a temperature higher than the air temperature in the vehicle compartment. The module 45 is switched to the above-described cold storage heat recovery mode, the vehicle interior air flow pattern is switched to the above-described second air duct pattern (second air flow state), and the temperature of the battery 391 is lower than the vehicle interior air temperature. In this case, if the battery module 45 is switched to the above-described heat storage mode or cold storage mode and the flow pattern of the passenger compartment air is switched to the above-described first air guide path pattern (first air flow state), the battery module 45 is discharged outside the vehicle for ventilation. The oil can be warmed by the heat recovered from the passenger compartment air.

  That is, when the temperature of the battery 391 is higher than the air temperature in the passenger compartment, the air is switched to the second airflow path pattern, and the air in the passenger compartment flows in the order of the battery 391, the battery heat exchanger 394, and the air discharge port 392f. Both the warm heat of the passenger compartment air and the warm temperature of the battery 391 can be recovered with cooling water by the battery heat exchanger 394 and used for oil warm-up.

  That is, when the temperature of the battery 391 is lower than the air temperature in the passenger compartment, the air is switched to the first air guide pattern, and the air in the passenger compartment flows in the order of the battery heat exchanger 394, the battery 391, and the air outlet 392e. The warm heat of the passenger compartment air can be recovered with cooling water by the battery heat exchanger 394 and used for oil warm-up.

(Fifth embodiment)
In the fifth embodiment, an operation mode in which the engine is warmed up by the heat stored in the heat storage device will be described.

  In this operation mode, a first cooling circuit (thick solid line) and a second third connected cooling circuit (thick one-dot chain line) are formed as shown in FIG. 14, and cooling water is bypassed in the second third connected cooling circuit. The three-way valves 19 and 25 are controlled so as to flow through the flow paths 18 and 24. For ease of understanding, FIG. 14 shows a simplified configuration of the vehicle thermal management system 10.

  In the first heat exchange target device group 81, the heat storage device (battery module 39 in the example of FIG. 14) is connected to the second third connected cooling circuit, and in the second heat exchange target device group 82, the cooling water The oil heat exchanger 61 is connected to the second and third connected cooling circuits.

  Then, when the oil temperature is lower than the predetermined temperature, the third and fourth switching are performed so that the cooling water flowing through the bypass passage 18 flows through the cooling water oil heat exchanger 61 and then flows through the engine 21 as shown in FIG. When the valves 53 and 54 are controlled and the oil temperature becomes equal to or higher than a predetermined temperature, the third and second cooling water flows through the engine 21 after the cooling water flowing through the bypass passage 18 flows through the cooling oil heat exchanger 61. 4 control valves 53 and 54 are controlled.

  Thereby, when the oil temperature is lower than the predetermined temperature, the engine oil or ATF oil can be warmed, and when the oil temperature becomes equal to or higher than the predetermined temperature, the engine 21 can be warmed.

  As shown in FIG. 14, when the heat storage device (battery module 39 in the example of FIG. 14) and the engine 21 communicate with each other, and the temperature of the battery 391 is higher than the vehicle interior air temperature, the battery module 45 is When switching to the cold storage heat recovery mode and switching the vehicle interior air flow pattern to the above-described second air guide path pattern (second air flow state) and the temperature of the battery 391 is lower than the vehicle interior air temperature, the battery module 45 Is switched to the above-described heat storage mode or cold storage mode, and the vehicle interior air flow pattern is switched to the first air guide path pattern (first air flow state) described above, the vehicle interior air discharged outside the vehicle for ventilation. The engine 21 can be warmed by the heat recovered from the engine.

  That is, when the temperature of the battery 391 is higher than the air temperature in the passenger compartment, the air is switched to the second airflow path pattern, and the air in the passenger compartment flows in the order of the battery 391, the battery heat exchanger 394, and the air discharge port 392f. Both the warm heat of the passenger compartment air and the warm heat of the battery 391 can be recovered by the battery heat exchanger 394 with cooling water and used for engine warm-up.

  That is, when the temperature of the battery 391 is lower than the air temperature in the passenger compartment, the air is switched to the first air guide pattern, and the air in the passenger compartment flows in the order of the battery heat exchanger 394, the battery 391, and the air outlet 392e. The warm heat of the passenger compartment air can be recovered with cooling water by the battery heat exchanger 394 and used for engine warm-up.

(Sixth embodiment)
In the sixth embodiment, an operation mode in which the oil is warmed up in a heat pump operation that absorbs heat from the heat storage device will be described. This operation mode is implemented in the case of temperature conditions where oil warm-up cannot be performed directly with the heat stored in the heat storage device.

  Specifically, when the temperature of the cooling water in the heat storage device (battery module 39 in the example of FIG. 15) is equal to or lower than the temperature of the oil in the cooling water oil heat exchanger 61 and equal to or lower than the predetermined temperature, it is shown in FIG. Thus, the first cooling circuit (thick solid line) and the second cooling circuit (thick one-dot chain line) are formed. In order to facilitate understanding, FIG. 15 shows a simplified configuration of the vehicle thermal management system 10.

  Heat generation occurs when the allowable temperature of the heat generating device (inverter 36 in the example of FIG. 15) of the first heat exchange target device group 81 is lower than the temperature of the cooling water of the heat storage device (battery module 39 in the example of FIG. 15). The device (inverter 36 in the example of FIG. 15) is connected to the first cooling circuit together with the heat exchanger 43 for cooling water cooling and the heat storage device (the battery module 39 in the example of FIG. 15), and the heat exchanger for cooling water heating 42 is connected to the second cooling circuit together with the cooling water oil heat exchanger 61.

  Further, the three-way valve 19 is controlled so that the cooling water flows through the bypass channel 18 in the second cooling circuit.

  Thereby, the heat of the heat storage device (battery module 39 in the example of FIG. 15) and the heat of the device that generates heat (inverter 36 in the example of FIG. 15) are absorbed by the cooling water cooling heat exchanger 43, and the cooling water cooling heat The heat absorbed by the exchanger 43 is dissipated by the cooling water cooling heat exchanger 43 to heat the cooling water in the second cooling circuit. And since the cooling water of the 2nd cooling circuit heated with the heat exchanger 43 for cooling water cooling flows through the cooling water oil heat exchanger 61, oil can be warmed.

  In this operation mode, the circulation of the cooling water in the third cooling circuit is basically stopped. This is basically because the engine 21 does not move in a scene where heat pump heating is performed. However, when the cooling water temperature of the third cooling circuit is low, for example, when the engine is warmed up, the cooling water is also circulated in the third cooling circuit.

  When the allowable temperature of the heat generating device (inverter 36 in the example of FIG. 15) is higher than the cooling water temperature of the cooling circuit communicating with the cooling water heating heat exchanger 42, the heat generating device (FIG. 15). In the example, the inverter 36) may be in communication with the cooling water heating heat exchanger 42.

(Seventh embodiment)
In the seventh embodiment, an operation mode in which the engine is warmed up by a heat pump operation that absorbs heat from the heat storage device will be described. This operation mode is implemented when the temperature of the oil in the cooling water oil heat exchanger 61 is equal to or higher than a predetermined temperature in the operation mode of the sixth embodiment.

  Specifically, as shown in FIG. 16, a first cooling circuit (thick solid line) and a second third connected cooling circuit (thick one-dot chain line) are formed.

  In the first heat exchange target device group 81, the cooling water cooling heat exchanger 43 and the heat storage device (battery module 39 in the example of FIG. 16) are connected to the first cooling circuit, and the cooling water heating heat exchanger. 42 is connected to a 2nd 3rd connection cooling circuit.

  Further, the three-way valves 19 and 25 are controlled so that the cooling water flows through the bypass flow paths 18 and 24 in the second and third coupled cooling circuits.

  Thereby, the heat of the heat storage device (battery module 39 in the example of FIG. 16) is absorbed by the cooling water cooling heat exchanger 43, and the heat absorbed by the cooling water cooling heat exchanger 43 is absorbed by the cooling water cooling heat exchanger. The heat is dissipated at 43 to heat the cooling water in the second and third connected cooling circuits. And since the cooling water of the 2nd 3rd connection cooling circuit heated with the heat exchanger 43 for cooling water cooling flows through the engine 21, the engine 21 can be warmed up.

  Since the cooling water flows in the bypass flow paths 18 and 24 in the second and third connected cooling circuits, the heat of the cooling water in the second and third connected cooling circuits is dissipated to the outside air by the medium / low temperature radiator 17 and the engine radiator 22. The engine 21 can be warmed up efficiently.

(Eighth embodiment)
In the eighth embodiment, an operation mode in which heating is performed by a heat pump operation that absorbs heat of the outside air from the mid-low temperature radiator 17 will be described.

  When the outside air temperature is higher than the predetermined temperature, a first cooling circuit (thick solid line) and a second cooling circuit (thick one-dot chain line) are formed as shown in FIG.

  In the first heat exchange target device group 81, the cooling water heating heat exchanger 42 and the first air heating heat exchanger 41 are connected to the first cooling circuit, and the cooling water cooling heat exchanger 43 is the first. 2 Connected to cooling circuit. In the second heat exchange target device group 82, the bypass flow path 56I is connected to the second cooling circuit.

  According to this, since the cooling water of the second cooling circuit cooled to a temperature lower than the outside air temperature by the cooling water cooling heat exchanger 43 flows through the medium / low temperature radiator 17, the heat of the outside air is absorbed by the medium / low temperature radiator 17. Can do.

  The heat of the outside air absorbed by the intermediate / low temperature radiator 17 is radiated to the cooling water of the first cooling circuit by the cooling water heating heat exchanger 42 by the heat pump operation of the refrigeration cycle 44. For this reason, the air blown into the passenger compartment can be heated by the first air heating heat exchanger 41.

  In this operation mode, as shown in FIG. 18, the heating performance is improved when the first air heating heat exchanger 41 and the cooling water heating heat exchanger 42 are arranged in series in the flow of the cooling water.

  When the battery module 39 is connected to the first cooling circuit in the first heat exchange target device group 81, the battery 391 can be warmed by the heat of the outside air absorbed by the mid-low temperature radiator 17.

(Ninth embodiment)
In the ninth embodiment, an operation mode in which heating is performed by a heat pump operation that absorbs heat of the outside air from the engine radiator 22 will be described.

  When the outside air temperature is lower than the predetermined temperature, a first cooling circuit (thick solid line) and a second third connected cooling circuit (thick dashed line) are formed as shown in FIG. Further, the three-way valve 19 is controlled so that the cooling water flows through the bypass passage 18 in the second and third coupled cooling circuits.

  In the first heat exchange target device group 81, the cooling water heating heat exchanger 42 and the first air heating heat exchanger 41 are connected to the first cooling circuit, and the cooling water cooling heat exchanger 43 is the first. 2 Connected to cooling circuit. In the second heat exchange target device group 82, the bypass flow path 56I is connected to the second cooling circuit.

  According to this, since the cooling water of the second and third connected cooling circuits cooled to a temperature lower than the outside air temperature by the cooling water cooling heat exchanger 43 flows through the engine radiator 22, the engine radiator 22 absorbs heat of the outside air. be able to.

  The heat of the outside air absorbed by the engine radiator 22 is radiated to the cooling water of the first cooling circuit by the cooling water heating heat exchanger 42 by the heat pump operation of the refrigeration cycle 44. For this reason, the air blown into the vehicle interior can be heated by the first air heating heat exchanger 41.

  A large capacity of the third pump 13 for the engine 21 can be used for circulating the cooling water in the second and third connected cooling circuits, and the second pump 12 can also be used in series. Will increase. For this reason, even if it is in the state where the viscosity of cooling water is very high under conditions where the outside air temperature is particularly low, the cooling water can be circulated and the temperature range in which the heat pump can be operated is widened.

  In this operation mode, the heating performance is improved when the first air heating heat exchanger 41 and the cooling water heating heat exchanger 42 are arranged in series in the flow of the cooling water, as in FIG.

  When the battery module 39 is connected to the first cooling circuit in the first heat exchange target device group 81, the battery 391 can be warmed by the heat of the outside air absorbed by the mid-low temperature radiator 17.

  In the second heat exchange target device group 82, the bypass flow path 56I is connected to the second cooling circuit, so that cooling water having an ambient temperature or lower flows to the second heat exchange target device group 82 and the second heat exchange is performed. It is possible to avoid frost from adhering to the target device group 82.

(10th Embodiment)
In the tenth embodiment, an operation mode in which heat is absorbed by the intermediate / low temperature radiator 17 and the engine radiator 22 is defrosted will be described.

  When it is estimated that frost is attached to the engine radiator 22, as shown in FIG. 20, the first cooling circuit (thick solid line), the second cooling circuit (thick one-dot chain line), and the third cooling circuit (thick two lines). Dotted line) is formed.

  The estimation of whether or not frost has adhered to the engine radiator 22 can be performed based on, for example, the outside air temperature, the operating state of the refrigeration cycle 44, the temperature of the cooling water, and the like.

  In the first heat exchange target device group 81, the cooling water heating heat exchanger 42 is connected to the first cooling circuit, and the cooling water cooling heat exchanger 43 is connected to the second cooling circuit. In the second heat exchange target device group 82, the heat storage device 62 or the heat generating device (device generating heat) is connected to the third cooling circuit.

  According to this, the heat pump operation can be performed by absorbing heat with the mid-low temperature radiator 17. Further, the cooling water temperature of the third cooling circuit can be raised by the heat supplied from the heat storage device 62 or the heat generating device, and the frost of the engine radiator 22 can be melted.

  In this operation mode, since there is no means for storing heat during operation of the heat pump, the heat storage device 62 must be capable of self-heating and have a structure capable of bypassing the inside.

(Eleventh embodiment)
In the eleventh embodiment, an operation mode in which heat is absorbed by the engine radiator 22 and the medium / low temperature radiator 17 is defrosted will be described.

  This operation mode is carried out when the heat storage device 62 is cooled below the outside air temperature. In order to cool the heat storage device 62 below the outside air temperature, the heat storage device 62 is connected to the second third coupled cooling circuit in the second heat exchange target device group 82 in the operation mode described in the ninth embodiment, What is necessary is just to control the three-way valve 19 so that a cooling water may flow through the bypass flow path 18 in a 2nd 3rd connection cooling circuit. Thereby, since the cooling water cooled by the heat exchanger 43 for cooling water cooling below the outside temperature flows through the heat storage device 62, the heat storage device 62 can be cooled below the outside temperature.

  In a state where the heat storage device 62 is cooled to the outside air temperature or lower, first, second, and third connected cooling circuits (thick solid lines) are formed as shown in FIG.

  As a result, the cooling water cooled to the ambient temperature or lower by the heat storage device 62 flows through the engine radiator 22 so that the engine radiator 22 can absorb heat from the outside air, and the cooling water heated by the cooling water heating heat exchanger 42. The frost of the medium / low temperature radiator 17 can be melted by water.

  Furthermore, since the cooling water (hot water) after melting the frost of the medium / low temperature radiator 17 is used for increasing the temperature of the heat storage device 62, it is used as a heat source during heat pump operation that absorbs heat by the engine radiator 22 after defrosting. Thus, the thermal energy can be used effectively.

(Twelfth embodiment)
In the twelfth embodiment, an operation mode for defrosting the intermediate / low temperature radiator 17 by the heat stored in the heat storage device will be described.

  When the surface temperature of the medium / low temperature radiator 17 becomes equal to or lower than the dew point due to continuous heat pump operation and frost adheres to the medium / low temperature radiator 17, the first cooling circuit (thick solid line) and the second cooling are performed as shown in FIG. A circuit (thick one-dot chain line) is formed.

  In the first heat exchange target device group 81, the cooling water heating heat exchanger 42 is connected to the first cooling circuit, and the cooling water cooling heat exchanger 43 and the heat storage device (battery module 39 in the example of FIG. 22). ) Is connected to the second cooling circuit.

  Thereby, since the cooling water (hot water) warmed by the heat stored in the heat storage device (battery module 39 in the example of FIG. 22) can be flowed to the medium / low temperature radiator 17, frost adhering to the medium / low temperature radiator 17 can be removed. Melting and defrosting operation is possible.

  Moreover, since the heat exchanger 43 for cooling water cooling is communicated with the heat storage device (battery module 39 in the example of FIG. 22), the heating can be continuously operated. That is, the heat storage device (battery module 39 in the example of FIG. 22) can be used as a heat source for defrosting and a heat absorption source for the heat pump.

  The determination as to whether or not frost has adhered to the medium / low temperature radiator 17 may be made by a method such as a method of estimating from the outside air temperature condition and the cooling water temperature, or a method of combining the capacity estimation on the refrigeration cycle side and the outside air temperature condition. it can.

  If a device that discharges waste heat (for example, the inverter 36) is connected to the second cooling circuit instead of the heat storage device (battery module 39 in the example of FIG. 22), the cooling water flowing to the mid-low temperature radiator 17 is warmed by the waste heat. Thus, it is possible to melt the frost adhering to the mid-low temperature radiator 17.

(13th Embodiment)
In the thirteenth embodiment, an operation mode for defrosting the intermediate / low temperature radiator 17 by the heat stored in the heat storage device will be described. An operation mode for defrosting the engine radiator 22 will be described.

  When the surface temperature of the engine radiator 22 becomes lower than the dew point temperature due to continuous heat pump operation and frost is attached to the engine radiator 22, as shown in FIG. 23, the first cooling circuit (thick solid line) and the second third connection A cooling circuit (thick dashed line) is formed.

  In the first heat exchange target device group 81, the cooling water heating heat exchanger 42 is connected to the first cooling circuit, and the cooling water cooling heat exchanger 43 and the heat storage device (battery module 39 in the example of FIG. 23). ) Is connected to the second cooling circuit.

  Thereby, since the cooling water (hot water) warmed by the heat stored in the heat storage device (battery module 39 in the example of FIG. 23) can be flowed to the engine radiator 22, the frost adhering to the engine radiator 22 is melted. A defrosting operation becomes possible.

  Moreover, since the heat exchanger 43 for cooling water cooling communicates with the heat storage device (battery module 39 in the example of FIG. 23), the heating can be continuously operated. That is, the heat storage device (battery module 39 in the example of FIG. 23) can be used as a heat source for defrosting and a heat absorption source for the heat pump.

  It should be noted that the determination of whether or not frost has adhered to the engine radiator 22 can be performed by a method such as a method of estimating from the outside air temperature condition and the cooling water temperature, or a combination of capacity estimation on the refrigeration cycle side and the outside air temperature condition. .

  If a device that discharges waste heat (for example, the inverter 36) is connected to the second and third connected cooling circuits instead of the heat storage device (battery module 39 in the example of FIG. 23), the cooling water flowing to the engine radiator 22 is waste heat. The frost attached to the engine radiator 22 can be melted by heating.

(14th Embodiment)
In the fourteenth embodiment, an operation mode in which cold energy is collected in the heat storage device after the vehicle is stopped will be described.

  When the vehicle stops and when cooling is required when the vehicle is started next time, a first cooling circuit (thick solid line) is formed as shown in FIG. In the first heat exchange target device group 81, the device that has been cooled in communication with the cooling water cooling heat exchanger 43 until just before the vehicle stops (inverter 36 in the example of FIG. 24; hereinafter referred to as a low temperature device). ), And a heat storage device (battery module 39 in the example of FIG. 24) are connected to the first cooling circuit.

  In this example, when the engine 21 is stopped and no occupant is on board, it is determined that the vehicle has stopped. The smart key system (a system that can open / close the door lock and start / stop the engine without inserting the key) determines whether the passenger is not in the vehicle when the key is outside the vehicle. It can be determined that it is not. If the key is a plug-in key, it can be determined that the occupant is not in the vehicle when the key is removed.

  Judgment whether or not cooling is required at the next vehicle start-up is based on the outside air temperature condition (25 ° C or higher), estimation of the season from the date and vehicle position (determined latitude and longitude by GPS), switch input that allows the passenger to arbitrarily select, etc. Can be done based on.

  Then, the first pump 11 is operated until the temperature difference between the low temperature device 36 and the heat storage device 39 is within a predetermined value, and the first heat exchange target device group 81 and the second heat exchange are performed when the vehicle travels next time. Of the target device group 82, a device that requires cold heat and the heat storage device 39 are communicated.

  According to this, since the low temperature device 36 having a temperature lower than that of the heat storage device 39 is communicated with the heat storage device 39 when the vehicle is stopped, the cold energy can be collected in the heat storage device 39 and used at the next vehicle start-up.

  For example, the cooling of the heat exchange target device can be assisted by using the cold energy collected in the heat storage device 39 when the vehicle is started next time.

  For example, if the cooling water refrigerant heat exchanger 40 is installed in the path of the heat storage device 39, the refrigeration cycle is performed by the cooling water refrigerant heat exchanger 40 using the cold collected in the heat storage device 39 at the next vehicle start-up. The refrigerant of 44 can be supercooled to assist cooling. As a result, it is possible to obtain a fuel efficiency improvement effect by extending the travelable distance in the travel mode (EV mode) in which only the travel electric motor is traveled without using the engine 21 and reducing the cooling device power.

  In addition, after stopping the vehicle, if there are multiple devices with lower temperature than the heat storage device (low temperature device), if you communicate with the heat storage device in order from the low temperature device with high temperature toward the low temperature device with low temperature, Cold energy can be efficiently recovered and stored from a plurality of devices in different temperature zones.

  In the example of FIG. 24, the low temperature device 36 and the heat storage device 39 are connected to the first cooling circuit, and the first pump 11 is operated. However, the low temperature device 36 and the heat storage device 39 are connected to the second cooling circuit or the second cooling circuit. It is connected to 3 cooling circuits, and the 2nd pump 12 or the 3rd pump 13 may operate | move.

(Fifteenth embodiment)
In the fifteenth embodiment, an operation mode in which the heat storage device collects the heat after the vehicle stops will be described.

  When the vehicle is stopped and when heat is required at the next vehicle start-up, the pre-heat recovery mode shown in FIG. 25 is first performed, and then the heat recovery mode shown in FIG. 26 is performed. The next time the vehicle is started, whether or not heat is required is determined by the outside air temperature condition (less than 25 ° C or more), the estimation of the season from the date and vehicle position (determined by latitude and longitude by GPS), and switch input that allows the passenger to select arbitrarily Etc. can be performed based on the above.

  In the pre-heat recovery mode, a first cooling circuit (thick solid line) is formed as shown in FIG. In the first heat exchange target device group 81, a heat exchange target device (inverter 36 in the example of FIG. 25, hereinafter referred to as a high temperature device), and a heat storage device (which is a little higher than the outside air temperature). In the example of FIG. 25, the battery module 39) is connected to the first cooling circuit. Then, at least one of the second pump 12 and the third pump 13 is operated. Accordingly, the heat is recovered from the heat exchange target device that is slightly higher than the outside air temperature.

  In the heat recovery mode, as shown in FIG. 26, the second and third connected cooling circuits (thick dashed lines) are formed. In the first heat exchange target device group 81, a heat storage device (battery module 39 in the example of FIG. 26) is connected to the second third connected cooling circuit, and in the second heat exchange target device group 82, pre-heat The heat exchange target device (in the example of FIG. 26, the supercharger 59 and the exhaust cooling heat exchanger 60) having a temperature higher than that of the heat exchange target device whose temperature has been recovered in the recovery mode is used as the second and third connected cooling circuits. Connected.

  Then, at least one of the second pump 12 and the third pump 13 is operated until the temperature difference between the high temperature device 36 and the heat storage device 39 is within a predetermined value.

  As a result, the heat is recovered from the heat exchange target device (in the example of FIG. 26, the supercharger 59 and the exhaust cooling heat exchanger 60) that is higher in temperature than the heat exchange target device that recovered the heat in the pre-heat recovery mode. To do.

  That is, first, the temperature of the heat storage device (battery module 39 in the example of FIG. 25) is raised by collecting the heat from the low temperature device (inverter 36 in the example of FIG. 25) in the pre-heat recovery mode, and then In addition, since the heat is recovered from the devices having a high temperature zone (in the example of FIG. 26, the supercharger 59 and the exhaust cooling heat exchanger 60), heat can be efficiently stored from a plurality of devices having different temperature zones.

  However, when the engine 21 is not used or the like, and the cooling water temperature on the engine 21 side is low, the heat recovery mode is not performed.

  Further, depending on the operation mode that is performed immediately before the vehicle stops, there may be no heat exchange target device having a temperature slightly higher than the outside air temperature. In that case, only the heat recovery mode is performed without performing the pre-heat recovery mode.

  In the example of FIG. 25, the high temperature device 36 and the heat storage device 39 are connected to the first cooling circuit, and the first pump 11 is operated. In the example of FIG. 26, the high temperature device 36 and the heat storage device 39 are in the second third coupled cooling. It is connected to a circuit, and at least one of the second pump 12 and the third pump 13 is operated, but the low temperature device 36 and the heat storage device 39 are connected to other cooling circuits, and the other pumps It may be in operation.

(Sixteenth embodiment)
In the sixteenth embodiment, in the traveling mode (EV mode) in which only the traveling electric motor is traveled without using the engine 21, the engine coolant temperature is set to a predetermined temperature at the timing of starting the engine 21. An operation mode for performing the pre-warm-up will be described. The operation time chart in this embodiment is shown in FIG.

  For example, when the engine 21 is stopped and the coolant temperature in the third pump flow path 16 is equal to or lower than a predetermined temperature, the second state shown in FIG. Thereby, the cooling water flowing through the second and third coupled cooling circuits can be cooled by the two radiators of the medium / low temperature radiator 17 and the engine radiator 22.

  In this state, the rate of decrease of the remaining power storage SOC (battery SOC) of the battery 391 is determined, and the time required for engine pre-warming (time required for warming the engine 21 to a predetermined temperature) is taken into consideration. The machine start timing (bypass switching timing) is determined.

  Specifically, a time Twu required for engine pre-warming shown in the following formula F1 and a time Tsoc (time until the engine start timing) until reaching the EV traveling lower limit shown in the following formula F2 are calculated, and Twu < While Tsoc is set, engine pre-warm-up is not performed, and engine pre-warm-up is started when Twu = Tsoc. Specifically, in the second and third coupled cooling circuits, the engine pre-warm-up is performed by controlling the three-way valves 19 and 25 so that the cooling water flows through the bypass flow paths 18 and 24.

Twu = (Twt−Tw0) × Vw × Cp × ρ / Qw F1
Where Tw0 is the initial cooling water temperature, Twt is the required cooling water temperature (engine pre-warming completion temperature), Vw is the cooling water capacity (for the warming-up circuit), Cp is the specific heat of the cooling water, ρ is the cooling water density, and Qw is This is the amount of heat given to the cooling water per unit time.

Tsoc = SOCc-SOCcr / (dSOC / dt) ... F2
However, SOCc is the current SOC, and SOCcr is the EV traveling lower limit SOC.

  According to this, since the cooling water flows through the bypass flow paths 18 and 24 in the second and third connected cooling circuits at the time of engine pre-warming, the heat of the cooling water in the second and third connected cooling circuits is changed to the low-temperature radiator 17 and the engine. The radiator 22 can prevent heat from being released to the outside air, and the engine 21 can be warmed up efficiently.

  It should be noted that the engine pre-warm-up may be started when Twu + α = Tsoc in order to provide a margin for the engine pre-warm-up time.

(17th Embodiment)
In the above embodiment, an air passage through which the blown air flows in a U-turn is formed inside the casing 392 of the battery module 39. However, in the seventeenth embodiment, as shown in FIG. An air passage through which the blown air flows linearly is formed inside the casing 852.

  The casing 852 of the battery module 85 forms an air passage through which the blown air blown from the blower 853 flows. The casing 852 is formed with inside air introduction ports 852a and 852b for introducing inside air.

  The battery 851 is disposed at a substantially central portion inside the casing 852. The inside air inlets 852a and 852b are formed at both ends of the casing 852. A substantially central portion of the casing 852 where the battery 851 is disposed is formed of a heat insulating material. Thereby, the battery module 85 has a heat retaining structure that stores warm / cold heat in the battery 851.

  The blower 853 is on one end side (the left end side in FIG. 28) from the battery 851 inside the casing 852. The blower 853 can be operated in two ways: when blowing from one inside air introduction port 852a toward the other inside air introduction port 852b, and when blowing in the opposite direction.

  Inside the battery 851, an air passage (not shown) through which air flows is formed. The battery 851 is cooled or heated by exchanging heat with air flowing through the battery 851. The air passage inside the battery 851 extends from the one inside air introduction port 852a side toward the other inside air introduction port 852b side.

  In the casing 852, two air discharge ports 852c and 852d for discharging outside air are formed. One air discharge port 852c is adjacent to one inside air introduction port 852a, and the other air discharge port 852d is adjacent to the other inside air introduction port 852b.

  A battery heat exchanger 854 is disposed between the battery 851 and the blower 853 inside the casing 852. The battery heat exchanger 854 exchanges heat between the blown air and the cooling water.

  Two air path switching doors 855 and 856 are arranged inside the casing 852. The first air path switching door 855 is a V-shaped door that switches between opening and closing the inside air inlet 852a and the air outlet 852c. The second air path switching door 856 is a V-shaped door that switches between opening and closing the inside air inlet 852b and the air outlet 852d.

  The operation of the electric actuator that rotationally drives the two air path switching doors 855 and 856 is controlled by the control device 70.

  By rotating the two air path switching doors 855 and 856, the battery module 85 is switched to four modes including a heat retention mode, a heat storage mode, a cold storage mode, and a cold storage heat recovery mode.

In the heat retaining mode, the two air path switching doors 855 and 856 are rotated to the position shown in FIG. 28 to close all the inside air inlets 852a and 852b and the air outlets 852c and 852d.

  Thereby, in the air passage inside casing 852, distribution of both inside air and outside air is blocked. Thereby, the heat generated by the battery 851 is stored in the battery 851. In the heat retention mode, it is preferable to block the flow of cooling water to the battery heat exchanger 854 in order to efficiently store heat in the battery 851.

  The heat storage mode is implemented mainly when the outside air temperature is low in winter (at the time of low outside air temperature). In the heat storage mode, as shown in FIG. 29, the first air path switching door 855 opens the inside air inlet 852a and closes the air outlet 852c, and the second air path switching door 856 closes the inside air inlet 852b. Open the air outlet 852d. The blower 853 blows air from the one inside air introduction port 852a side toward the other inside air introduction port 852b side.

  Thereby, the inside air introduced from the inside air introduction port 852a flows through the battery heat exchanger 854 and the battery 851 in this order, and is then discharged from the air discharge port 852d.

  At this time, the cooling water heated by the cooling water heating heat exchanger 42 or the like is circulated through the battery heat exchanger 854. Thereby, since the inside air heated by the battery heat exchanger 854 flows through the battery 851, the battery 851 stores warm heat.

  The cold storage mode is performed mainly when the outdoor temperature is high in summer (at a high outdoor temperature). In the cold storage mode, the two air path switching doors 855 and 856 are rotated similarly to the heat storage mode shown in FIG. 29, and the blower 853 is operated similarly to the heat storage mode shown in FIG.

  Thereby, the inside air introduced from the inside air introduction port 852a flows through the battery heat exchanger 854 and the battery 851 in this order, and is then discharged from the air discharge port 852d.

  At this time, the cooling water cooled by the cooling water cooling heat exchanger 43 is allowed to flow through the battery heat exchanger 854. As a result, the inside air cooled by the battery heat exchanger 854 flows through the battery 851, so that cold energy is stored in the battery 851.

  The cold storage heat recovery mode is performed after the heat storage mode or the cold storage mode is performed, that is, when hot or cold energy is stored in the battery 851.

  In the cold storage heat recovery mode, as shown in FIG. 30, the first air path switching door 855 closes the inside air inlet 852a and opens the air outlet 852c, and the second air path switching door 856 opens the inside air inlet 852b. Open and close the air outlet 852d. In contrast to the heat storage mode / cold storage mode shown in FIG. 31, the blower 853 blows air from the other inside air introduction port 852b side toward the one inside air introduction port 852a side.

  Thereby, the inside air introduced from the inside air introduction port 852b flows through the battery 851 and the battery heat exchanger 854 in this order, and is then discharged from the air discharge port 852c.

  At this time, when the heat is stored in the battery 851, the cooling water cooled by the cooling water cooling heat exchanger 43 is circulated through the battery heat exchanger 854. Thereby, since the inside air heated by the battery 851 flows through the battery heat exchanger 854, the heat stored in the battery 851 can be recovered in the cooling water.

  On the other hand, when the cold heat is stored in the battery 851, the cooling water heated by the cooling water heating heat exchanger 42 or the like is circulated through the battery heat exchanger 854. Thereby, since the inside air cooled by the battery 851 flows through the battery heat exchanger 854, the cold heat stored in the battery 851 can be recovered in the cooling water.

  According to the present embodiment, it is possible to obtain the same function and effect as the fourth embodiment.

(Eighteenth embodiment)
In the above embodiment, the battery modules 39 and 85 are configured to exchange heat between the batteries 391 and 851 and the cooling water via the blown air. However, in the eighteenth embodiment, as shown in FIG. The battery module 86 directly exchanges heat between the battery 861 and the cooling water.

  The battery module 86 includes a battery 861 and a tank 862. The battery 861 is composed of a plurality of battery cells and the like, and is housed inside the tank 862.

  The tank 862 is formed with an inlet 862a and an outlet 862b for cooling water. The cooling water flowing in from the inlet 862a flows through the internal space of the tank 862 and flows out from the outlet 862b.

  The cooling water flowing through the internal space of the tank 862 exchanges heat with the battery 861 so that the battery 861 is cooled or heated.

  The tank 862 is formed of a material having heat insulation properties. For this reason, the battery module 86 can store hot and cold using the heat capacity of the battery 861. In other words, the battery module 86 can be used as a heat storage body.

(Nineteenth embodiment)
In the first to eighteenth embodiments, the engine radiator 22 is arranged in the third pump flow path 16, but in the nineteenth embodiment, as shown in FIG. 32, the engine radiator 22 (second flow path group). Is included in the second heat exchange target device group 82.

  According to this, the bypass flow path 18 and the three-way valve 19 can be abolished. Further, when the engine radiator 22 absorbs heat, the low-temperature cooling water cooled by the cooling water cooling heat exchanger 43 can be prevented from passing through the engine 21.

(20th embodiment)
In the first to eighteenth embodiments, the medium / low temperature radiator 17 is arranged in the second pump flow path 15A. However, in the twentieth embodiment, the medium / low temperature radiator 17 (second flow) as shown in FIG. (Path group radiator) is included in the second heat exchange target device group 82.

  According to this, the bypass flow path 18 and the three-way valve 19 can be abolished. Further, it is possible to perform an operation in which the cooling performance of the engine 21 is greatly improved by connecting the engine radiator 22 and the medium / low temperature radiator 17 in series during the cooling of the medium / low temperature using the heat storage device.

(21st Embodiment)
In the first to eighteenth embodiments, the medium / low temperature radiator 17 is arranged in the second pump flow path 15A, and the engine radiator 22 is arranged in the third pump flow path 16, but in the twenty-first embodiment, As shown in FIG. 34, the low-temperature radiator 17 (second flow path group radiator) and the engine radiator 22 (second flow path group radiator) are included in the second heat exchange target device group 82.

According to this, the bypass flow paths 18 and 24 and the three-way valves 19 and 25 can be abolished. Further, when the engine radiator 22 absorbs heat, the low-temperature cooling water cooled by the cooling water cooling heat exchanger 43 can be prevented from passing through the engine 21.
In the first cooling circuit, the cooling of the medium-low temperature device is performed using a heat storage device, and the engine radiator 22 and the medium-low temperature radiator 17 are connected in series during that time to cool the engine 21. Operation that greatly improves performance becomes possible.

(Twenty-second embodiment)
In the first to eighteenth embodiments, the medium / low temperature radiator 17 is arranged in the second pump flow path 15A and the engine radiator 22 is arranged in the third pump flow path 16, but in the twenty-second embodiment, 35, the medium / low temperature radiator 17 (first flow path group radiator) is included in the first heat exchange target device group 81, and the engine radiator 22 (second flow path group radiator) is the second. It is included in the heat exchange target device group 82.

  According to this, the bypass flow paths 18 and 24 and the three-way valves 19 and 25 can be abolished. Further, when the engine radiator 22 absorbs heat, the low-temperature cooling water cooled by the cooling water cooling heat exchanger 43 can be prevented from passing through the engine 21.

  Further, when heat is absorbed by one of the intermediate / low temperature radiator 17 and the engine radiator 22, the other radiator can be easily defrosted.

In addition, the cooling water of the first cooling circuit can be cooled by the mid-low temperature radiator 17 without depending on the cooling water cooling heat exchanger 43. Moreover, when the engine 21 is stopped, the cooling water of the second cooling circuit can be cooled by the engine radiator 22 (23rd embodiment).
In the first to eighteenth embodiments, the mid-low temperature radiator 17 is arranged in the second pump flow path 15A and the engine 21 is arranged in the third pump flow path 16, but in the twenty-third embodiment, As shown in FIG. 36, the medium / low temperature radiator 17 (second flow path group radiator) and the engine 21 are included in the second heat exchange target device group 82.

  According to this, the bypass flow path 18 and the three-way valve 19 can be abolished. Moreover, the serialization mode at the time of pump failure can also be implemented when the engine 21 is warmed (however, only when the engine 21 is stopped).

Further, when the engine radiator 22 absorbs heat, the low-temperature cooling water cooled by the cooling water cooling heat exchanger 43 can be prevented from passing through the engine 21.
Further, it is possible to perform an operation in which the cooling performance of the engine 21 is greatly improved by connecting the engine radiator 22 and the medium / low temperature radiator 17 in series during the cooling of the medium / low temperature using the heat storage device.

(Other embodiments)
The present invention is not limited to the above embodiment, and can be variously modified as follows.

  (1) Various devices can be used as the heat exchange target device. For example, a heat exchanger that is built in a seat on which an occupant is seated and that cools and heats the seat with cooling water may be used as the heat exchange device. The number of heat exchange target devices may be any number as long as it is plural (two or more).

  (2) In each of the above embodiments, the heat exchange capability for the heat exchange target device may be controlled by intermittently circulating cooling water through the heat exchange target device.

  (3) In the above embodiment, the cooling water cooling heat exchanger 43 that cools the cooling water with the low-pressure refrigerant of the refrigeration cycle 44 is used as the cooling means for cooling the cooling water, but a Peltier element is used as the cooling means. May be.

  (4) In the above embodiments, cooling water is used as the heat medium, but various media such as oil may be used as the heat medium.

  (5) Nanofluid may be used as the cooling water (heat medium). A nanofluid is a fluid in which nanoparticles having a particle size of the order of nanometers are mixed. In addition to the effect of lowering the freezing point as in the case of cooling water using ethylene glycol (so-called antifreeze liquid), the following effects can be obtained by mixing the nanoparticles with the cooling water.

  That is, the effect of improving the thermal conductivity in a specific temperature range, the effect of increasing the heat capacity of the cooling water, the effect of preventing the corrosion of the metal pipe and the deterioration of the rubber pipe, and the cooling water at a cryogenic temperature The effect which improves the fluidity | liquidity of can be acquired.

  Such effects vary depending on the particle configuration, particle shape, blending ratio, and additional substance of the nanoparticles.

  According to this, since the thermal conductivity can be improved, it is possible to obtain the same cooling efficiency even with a small amount of cooling water as compared with the cooling water using ethylene glycol.

  Moreover, since the heat capacity of the cooling water can be increased, the amount of cold storage heat of the cooling water itself (cold storage heat by sensible heat) can be increased.

  The aspect ratio of the nanoparticles is preferably 50 or more. This is because sufficient thermal conductivity can be obtained. The aspect ratio is a shape index that represents the ratio of the vertical and horizontal dimensions of the nanoparticles.

Nanoparticles containing any of Au, Ag, Cu and C can be used. Specifically, Au nanoparticle, Ag nanowire, CNT (carbon nanotube), graphene, graphite core-shell nanoparticle (a structure such as a carbon nanotube surrounding the above atom is included as a constituent atom of the nanoparticle. Particles), Au nanoparticle-containing CNTs, and the like can be used.

  (6) In the refrigeration cycle 44 of each of the above embodiments, a chlorofluorocarbon refrigerant is used as the refrigerant. However, the type of the refrigerant is not limited to this, and natural refrigerant such as carbon dioxide, hydrocarbon refrigerant, etc. It may be used.

  The refrigeration cycle 44 of each of the above embodiments constitutes a subcritical refrigeration cycle in which the high-pressure side refrigerant pressure does not exceed the critical pressure of the refrigerant, but the supercritical refrigeration cycle in which the high-pressure side refrigerant pressure exceeds the critical pressure of the refrigerant. May be configured.

  (7) In each of the above embodiments, an example in which the vehicle cooling system of the present invention is applied to a hybrid vehicle has been described. However, an electric vehicle that does not have an engine and obtains driving force for vehicle traveling from a traveling electric motor, or fuel You may apply this invention to the fuel cell vehicle etc. which use a battery as the energy generation means for driving | running | working.

11 1st pump 12 2nd pump 13 3rd pump 14 1st pump flow path (1st path)
15A Second pump flow path (second path)
15B Second pump flow path (second path)
16 Third pump flow path (third path)
31 1st switching valve 32 2nd switching valve 34C-34H Flow path (1st flow path group)
53 3rd switching valve 54 4th switching valve 56C-56I flow path (2nd flow path group)

Claims (25)

A first pump (11) and a second pump (12) for sucking and discharging the heat medium;
A path constituted by a flow path (14) through which the heat medium flows, wherein the first pump (11) is disposed;
A path constituted by flow paths (15A, 15B) through which the heat medium flows, and a second path in which the second pump (12) is disposed;
A first channel group (34C, 34D, 34E, 34F, 34G, 34H) composed of a plurality of channels through which the heat medium flows;
The heat medium inlet side of the first path (14) and the heat medium inlet side of the second path (15A, 15B) are connected in parallel to each other, and the heat medium outlet side of each flow path of the first flow path group is parallel to each other. And a first switching valve (31) that switches between a case where each flow path of the first flow path group communicates with the first path (14) and a case where the flow paths communicate with the second path (15A, 15B). When,
The heat medium outlet side of the first path (14) and the heat medium outlet side of the second path (15A, 15B) are connected in parallel to each other, and the heat medium inlet side of each flow path of the first flow path group is parallel to each other. And a second switching valve (32) for switching between the case where each flow path of the first flow path group communicates with the first path (14) and the case where the flow paths communicate with the second path (15A, 15B). And
For a plurality of flow paths constituting the first flow path group, a path communicated by the first switching valve (31) and a path communicated by the second switching valve (32) are the same. When the first switching valve (31) and the second switching valve (32) operate in conjunction with each other, a heat medium circuit including the first path (14) and the second path (15A, 15B) And a heat medium circuit including
For the plurality of flow paths constituting the first flow path group, the path communicated by the first switching valve (31) and the path communicated by the second switching valve (32) are different. The first switching valve (31) and the second switching valve (32) operate in conjunction with each other, whereby the first path (14) and the second path (15A, 15B) are communicated in series. A vehicle thermal management system comprising a medium circuit. A third pump (13) for sucking and discharging the heat medium;
A path constituted by a flow path (16) through which the heat medium flows, and a third path in which the third pump (13) is disposed;
A second flow path group (56C, 56D, 56E, 56F, 56G, 56H, 56I) composed of a plurality of flow paths through which the heat medium flows;
Of the second path (15A, 15B), the heat medium outlet side of the flow path (15B) located on the first switching valve (31) side and the heat medium outlet side of the third path (16) are connected in parallel to each other. And the heat medium inlet side of each flow path of the second flow path group is connected in parallel to each other, and each flow path of the second flow path group communicates with the second path (15A, 15B). A third switching valve (53) for switching between the case of communicating with the three paths (16),
Of the second path (15A, 15B), the heat medium inlet side of the flow path (15A) located on the second switching valve (32) side and the heat medium inlet side of the third path (16) are connected in parallel to each other. And the heat medium outlet side of each flow path of the second flow path group is connected in parallel to each other, and each flow path of the second flow path group communicates with the second path (15A, 15B) and A fourth switching valve (54) for switching between the case of communicating with the three paths (16),
Regarding the flow paths of the second flow path group, the flow paths communicated by the third switching valve (53) and the flow paths communicated by the fourth switching valve (54) are the same. When the switching valve (53) and the fourth switching valve (54) operate in conjunction with each other, the heat medium circuit including the second path (15A, 15B) and the third path (16) are included. Forming the heat medium circuit independently of each other,
About the flow path of the second flow path group, the third switching valve is configured such that the flow path communicated by the third switching valve (53) is different from the flow path communicated by the fourth switching valve (54). (53) and the fourth switching valve (54) operate in conjunction with each other so that the second path (15A, 15B) and the third path (16) communicate with each other in series. The vehicular thermal management system according to claim 1, wherein the vehicular thermal management system is formed. In the second path (15B), a second path radiator (17) for exchanging heat between the heat medium and outside air is disposed,
In the third path (16), a third path radiator (22) for exchanging heat between the heat medium and outside air is disposed,
The third path (16) includes a heat medium passage formed inside the engine (21) of the vehicle,
The first flow path group includes a heat exchanger for cooling a heat medium (43) that cools the heat medium by exchanging heat between the low-pressure refrigerant of the refrigeration cycle (44) and the heat medium, and the refrigeration cycle (44). The heat medium heating heat exchanger (42) that heats the heat medium by exchanging heat between the high-pressure refrigerant and the heat medium, heat exchange between the intake air of the engine (21) and the heat medium, and Intake air cooling heat exchanger (38) that cools the intake air, heat generating device (36) that generates heat, heat storage device (39, 85, 86) that can store at least one of heat and cold, and into the passenger compartment At least one device is arranged among the heat exchangers (41) for air heating that heats the blown air by exchanging heat between the blown air and the cooling water.
The second channel group includes an exhaust heat exchanger (60) for exchanging heat between the exhaust gas of the engine (21) and the heat medium, and an oil heat exchanger for exchanging heat between oil and the heat medium. (61), a heat storage device (62) that can store at least one of hot and cold, and an air heating heat exchanger that heats the blown air by exchanging heat between the blown air and cooling water into the passenger compartment ( 57) The vehicle thermal management system according to claim 2, wherein at least one device is arranged. When the temperature of the heat medium in the second path (15A, 15B) is higher than the temperature of the heat medium in the third path (16), the second path (15A, 15B) and the third path (16) And a heat medium circuit connected in series,
When the temperature of the heat medium in the second path (15A, 15B) and the temperature of the heat medium in the third path (16) are higher than a predetermined temperature, the second path (15A, 15B) is included. The vehicle heat management system according to claim 3, wherein the heat medium circuit and the heat medium circuit including the third path (16) are formed independently of each other. A vehicle thermal management system applied to a hybrid vehicle that operates or stops the engine (21) according to a remaining capacity of a battery (391) that supplies electric power to a traveling electric motor (37),
A second path radiator bypass flow path (18) through which the heat medium flows bypassing the second path radiator (17);
A third path radiator bypass flow path (24) through which the heat medium flows bypassing the third path radiator (22);
Second path switching means (19) for switching between the case where the heat medium flows through the second path radiator (17) and the case where the heat medium flows through the second path radiator bypass flow path (18);
Third path switching means (25) for switching between the case where the heat medium flows through the third path radiator (22) and the case where the heat medium flows through the third path radiator bypass flow path (24);
The engine start timing at which the engine (21) starts is estimated based on the remaining capacity of the battery (391), and the second medium is used so that the heat medium flows through the second-path radiator bypass passage (18). The engine (21) has a bypass switching timing for switching the third path switching means (25) so that the switching means (19) is switched and the heat medium flows through the third path radiator bypass flow path (24). The vehicle thermal management system according to claim 4, further comprising means (70) for determining an engine based on a time required to warm up the engine to a predetermined temperature and the engine start timing.   When it is estimated that an abnormality has occurred in one of the first pump (11) and the second pump (12), the first path (14) and the second path (15A, 15B) The heat management system for a vehicle according to claim 1, wherein a heat medium circuit communicated in series is formed.   When it is estimated that an abnormality has occurred in one of the first pump (11) and the second pump (12), and the temperature of the heat medium in the first path (14) is lower than a predetermined temperature The said 1st path | route (14), the said 2nd path | route (15A, 15B), and the said 3rd path | route (16) form the heat-medium circuit connected in series, The Claim 3 characterized by the above-mentioned. Vehicle thermal management system. Control means (70) for issuing a drive command to the first pump (11) and the second pump (12);
In the case of the pumps of the first pump (11) and the second pump (12), the rotational speed of the pump deviates from a predetermined range with respect to the drive command issued from the control means (70). The vehicle thermal management system according to claim 6, wherein an abnormality has occurred in the pump. The heat exchanger (43) for cooling the heat medium is disposed in the first channel group (34G),
When it is estimated that frost is attached to one of the second path radiator (17) and the third path radiator (22), the other radiator and the heat medium cooling heat exchanger ( 43), the first switching valve (31), the second switching valve (32), the third switching valve (53), and the fourth switching valve (54) operate in conjunction with each other. The vehicle thermal management system according to claim 3. In the first flow path group (34C, 34E), at least one of the heat storage device (39) and a heat generating device that generates heat is disposed,
When it is presumed that frost is attached to the one radiator, the first switching valve (31) and the second switching valve (32) so that the one radiator communicates with the at least one device. The vehicle thermal management system according to claim 9, wherein the third switching valve (53) and the fourth switching valve (54) operate in conjunction with each other. The heat storage device (39) is disposed in the first flow path group (34E),
The oil heat exchanger (61) is disposed in the second channel group (56G),
When the temperature of the heat medium in the heat storage device (39) is equal to or higher than the temperature of the oil in the oil heat exchanger (61) and equal to or higher than a predetermined temperature, the heat storage device (39) and the oil heat exchanger The first switching valve (31), the second switching valve (32), the third switching valve (53), and the fourth switching valve (54) operate in conjunction with each other so as to communicate with (61). The thermal management system for vehicles according to claim 3 characterized by things. In the first flow path group (34F, 34G), the heat medium cooling heat exchanger (43) and the heat medium heating heat exchanger (42) are arranged,
When the temperature of the heat medium in the heat storage device (39) is lower than the temperature of the oil in the heat exchanger for oil (61) and lower than a predetermined temperature, the heat storage device (39) and the heat for cooling the heat medium The first switching valve (31) and the second switching so that the exchanger (43) communicates and the oil heat exchanger (61) communicates with the heat medium heating heat exchanger (42). The vehicle thermal management system according to claim 11, wherein the valve (32), the third switching valve (53), and the fourth switching valve (54) operate in conjunction with each other.   When the temperature of the heat medium in the heat storage device (39) is equal to or higher than a predetermined temperature, the heat storage device (39) and the heat exchanger for cooling the heat medium (43) communicate with each other and heat exchange for the heat medium heating is performed. The first switching valve (31), the second switching valve (32), the third switching valve (53), and the fourth switching valve so that the vessel (42) and the third path (16) communicate with each other. The vehicle thermal management system according to claim 11, wherein (54) operates in conjunction with each other.   The heat storage device (39) includes a battery (391) for storing hot and cold heat, and a battery heat exchanger (394) for exchanging heat between the battery (391) and the heat medium. The vehicle thermal management system according to any one of claims 11 to 13. The heat storage device (39) is disposed in the first flow path group (34E),
The oil heat exchanger (61) is disposed in the second channel group (56G),
The heat storage device (39)
A battery (391) for storing hot and cold energy;
A blower (393) for blowing air in the passenger compartment;
A casing (392) forming an air passage (392b, 392c) through which the air flows;
A battery heat exchanger (394) for exchanging heat between the battery (391) and the heat medium via air;
Air flow switching means (395, 396, 397) for switching the air flow in the air passages (392b, 392c),
The battery (391) and the battery heat exchanger (394) are disposed in the air passage (392b, 392c),
The casing (392) is formed with air discharge ports (392e, 392f) for discharging the air flowing through the air passages (392b, 392c) to the outside of the vehicle,
The air flow switching means (395, 396, 397) has a first air flow state in which the air flows in the order of the battery heat exchanger (394), the battery (391), and the air discharge port (392e). The second air flow state in which the air flows in the order of the battery (391), the battery heat exchanger (394), and the air discharge port (392f) can be switched.
In a state where the battery heat exchanger (394) and the oil heat exchanger (61) communicate with each other, when the temperature of the battery (391) is higher than the temperature of the air, the air flow switching means (395, 396, 397) switches the air flow to the second air flow state, and when the temperature of the battery (391) is lower than the temperature of the air, the air flow switching means (395, 396, 397). 4. The vehicle thermal management system according to claim 3, wherein the air flow is switched to the first air flow state. The heat storage device (39) is disposed in the first flow path group (34E),
The heat storage device (39)
A battery (391) for storing hot and cold energy;
A blower (393) for blowing air in the passenger compartment;
A casing (392) forming an air passage (392b, 392c) through which the air flows;
A battery heat exchanger (394) for exchanging heat between the battery (391) and the heat medium via air;
Air flow switching means (395, 396, 397) for switching the air flow in the air passages (392b, 392c),
The battery (391) and the battery heat exchanger (394) are disposed in the air passage (392b, 392c),
The casing (392) is formed with air discharge ports (392e, 392f) for discharging the air flowing through the air passages (392b, 392c) to the outside of the vehicle,
The air flow switching means (395, 396, 397) has a first air flow state in which the air flows in the order of the battery heat exchanger (394), the battery (391), and the air discharge port (392e). The second air flow state in which the air flows in the order of the battery (391), the battery heat exchanger (394), and the air discharge port (392f) can be switched.
When the temperature of the battery (391) is higher than the temperature of the air in a state where the heat exchanger for battery (394) and the third path (16) communicate with each other, the air flow switching means (395) 396, 397) switches the air flow to the second air flow state, and when the temperature of the battery (391) is lower than the temperature of the air, the air flow switching means (395, 396, 397) The vehicle thermal management system according to claim 3, wherein the air flow is switched to the first air flow state. The heat storage device (39) is disposed in the first flow path group (34E),
After the vehicle is stopped, among the devices arranged in the first flow path group and the devices arranged in the second flow path group, a high-temperature device having a temperature higher than the heat storage device (39) and the heat storage device ( 39), the first switching valve (31), the second switching valve (32), the third switching valve (53), and the fourth switching valve (54) operate in conjunction with each other. Of the first path (14), the second path (15A, 15B) and the third path (16) arranged in a path communicating with the high temperature device, and the second pump (12) At least one of the pumps is operated until the temperature difference between the high temperature device and the heat storage device (39) is within a predetermined value,
When the vehicle travels next time, the device that is in the first flow path group and the device that is in the second flow path group that requires heat and the heat storage device (39) communicate with each other. The first switching valve (31), the second switching valve (32), the third switching valve (53), and the fourth switching valve (54) operate in conjunction with each other as described above. 3. The thermal management system for a vehicle according to 3.   When there are a plurality of high-temperature devices after the vehicle stops, the first switching valve communicates with the heat storage device (39) in order from the low-temperature high-temperature device toward the high-temperature device. The vehicle heat according to claim 17, wherein the second switching valve (32), the third switching valve (53), and the fourth switching valve (54) operate in conjunction with each other. Management system. The heat storage device (39) is disposed in the first flow path group (34E),
After the vehicle stops, a low-temperature device having a temperature lower than that of the heat storage device (39) among the devices arranged in the first flow path group and the device arranged in the second flow path group and the heat storage device ( 39), the first switching valve (31), the second switching valve (32), the third switching valve (53), and the fourth switching valve (54) operate in conjunction with each other. Of the first path (14), the second path (15A, 15B) and the third path (16) arranged in a path communicating with the low-temperature device, and the second pump (12) At least one of the pumps is operated until the temperature difference between the low temperature device and the heat storage device (39) is within a predetermined value,
When the vehicle travels next time, the device that is in the first flow path group and the device that is in the second flow path group that requires cold heat and the heat storage device (39) communicate with each other. The first switching valve (31), the second switching valve (32), the third switching valve (53), and the fourth switching valve (54) operate in conjunction with each other as described above. The vehicle thermal management system according to any one of 3, 17, and 18.   When there are a plurality of the low-temperature devices after the vehicle stops, the first switching valve is in communication with the heat storage device (39) in order from the low-temperature device having a high temperature toward the low-temperature device having a low temperature. The vehicle heat according to claim 19, wherein the second switching valve (32), the third switching valve (53), and the fourth switching valve (54) operate in conjunction with each other. Management system. In the second path (15A, 15B), a second path radiator (17) for exchanging heat between the heat medium and outside air is disposed,
A second flow path group radiator (22) for exchanging heat between the heat medium and the outside air is disposed in one of the plurality of flow paths constituting the second flow path group. The vehicle thermal management system according to claim 2, wherein In one of the plurality of channels constituting the second channel group, a second channel group radiator (17) for exchanging heat between the heat medium and the outside air is disposed,
The vehicle thermal management system according to claim 2, wherein a radiator (22) for a third path for exchanging heat between the heat medium and outside air is arranged in the third path (16). The second flow path group includes three or more flow paths through which the heat medium flows,
Two of the three or more channels constituting the second channel group have one second channel group radiator (17, 22) for exchanging heat between the heat medium and the outside air. The vehicle thermal management system according to claim 2, wherein the vehicle thermal management system is arranged. In one of the plurality of channels constituting the first channel group, a first channel group radiator (17) for exchanging heat between the heat medium and outside air is disposed,
A second flow path group radiator (22) for exchanging heat between the heat medium and the outside air is disposed in one of the plurality of flow paths constituting the second flow path group. The vehicle thermal management system according to claim 2, wherein The second flow path group includes three or more flow paths through which the heat medium flows,
In one of the three or more channels constituting the second channel group, a second channel group radiator (17) for exchanging heat between the heat medium and the outside air is disposed,
The other one of the plurality of flow paths constituting the second flow path group includes a heat medium flow path formed inside the engine (21) of the vehicle,
The vehicle thermal management system according to claim 2, wherein a radiator (22) for a third path for exchanging heat between the heat medium and outside air is arranged in the third path (16).

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